Re: VM restore on Ceph *very* slow

[Irek Fasikhov <malmyzh@xxxxxxxxx>]

Examples

Backups:

/usr/bin/nice -n +20 /usr/bin/rbd -n client.backup export test/vm-105-disk-1@rbd_data.505392ae8944a - | /usr/bin/pv -s 40G -n -i 1 | /usr/bin/nice -n +20 /usr/bin/pbzip2 -c > /backup/vm-105-disk-1

Restore: 

pbzip2 -dk /nfs/RBD/big-vm-268-disk-1-LyncV2-20140830-011308.pbzip2 -c | rbd -n client.rbdbackup -k /etc/ceph/big.keyring -c /etc/ceph/big.conf import --image-format 2 - rbd/Lyncolddisk1

2014-12-12 8:38 GMT+03:00 Irek Fasikhov <malmyzh@xxxxxxxxx>:

Hi.

For faster operation, use rbd export/export-diff and import/import-diff

2014-12-11 17:17 GMT+03:00 Lindsay Mathieson <lindsay.mathieson@xxxxxxxxx>:

Anyone know why a VM live restore would be excessively slow on Ceph? restoring
a  small VM with 12GB disk/2GB Ram is taking 18 *minutes*. Larger VM's can be
over half an hour.

The same VM's on the same disks, but native, or glusterfs take less than 30
seconds.

VM's are KVM on Proxmox.


thanks,
--
Lindsay

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С уважением, Фасихов Ирек Нургаязович

Моб.: +79229045757

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С уважением, Фасихов Ирек Нургаязович

Моб.: +79229045757

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